For one it asserts that we should have an issue with others getting rich. Even if the net gain for society is 0, what is the problem with other people getting rich? Does it impoverish you in any way? Maybe you could make a case for price rises hurting the poor - but the author doesn't mention it and I don't think that's his/her angle.
There's also an incredible elitism about what a company "should" be.
> Are our kids going to say we boldly explored the range of human possibility by putting a million dollars into a mobile app that sends a pointless text message saying “Yo”?
Guess what? People like emojis and filters and flappy bird. The author doesn't have a problem with the "startup scene", he/she has a problem with humanity.